John m



(No Model.) 2 Sheets-Sheet l'.

J. M. PINCE & W. D.. GRAY.

ROTARY BOLT.

No. 398,388. Patented Feb.. 26, 1889.'

Y fr#/A N WITJVELSSES l l (No Model.) 2 Sheets-Sheet' 2.

J'. M. PINCE & W. D. GRAY.'

ROTARY BOLT.

No. 398,388. Patented Feb. 26 1889.

WITNESSES A L" UNITED STATESl PATENT OFFICE,

.IOIIN M. FINCI-I AND IVILIAIAM D. GRAY, OF MIIVAUKEE, WISCONSIN ASSIGNORS TO EDIVARD P. AILIS & COMPANY, OF SAME PLACE.

HTARY BOLT.

SPECIFICATION forming part of Letters Patent No. 398,388, dated February 26, 1889.

Application tiled (inne 3, 1887.

To @ZZ whom, it may concern:

Be it known that we, JOHN M. FINCI-I and XVILLIAM D. GRAY, of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain Improvements in Centrifugal Reels, of which the following is a specification.

This invention relates to that class of bolt ing or dressing machines in which the rotary cylindrical reel is arranged horizon tally within a suitable casing; and it consists in the combination of the external reel, an internal cylinder or drinn extending forward from end to end, and a screen located at the head of the reel and extended within the drum, as and for the purpose hereinafter described. l In the accompanying drawings, Figure l represents a longitudinal vertical section of a machine containing our improvements. Fig'. 2 is a vertical cross-section of the same. Fig. 3 is a crosssection showing the internal drum of polygonal instead of circular form in crosssection.

Referring to the drawings, A represents the external frame or casing, which may be made of any appropriate form adapted to inclose the reel, its side walls being commonly deflected inward toward each other, as usual, to deliver the bolted material to the ordinary conveyors, B B, at the base.

C represents the cylindrical reel mounted longitudinally within the casing in a horizontal or substantially horizontal position and sustained by a longitudinal driving-shaft, D, seated in suitable bearings. The reel is clothed with boltingcloth or other pervious material and is of cylindrical form in crosssection, the cloih being sustained in part by longituilinal internal ribs, ,ai [ached at their ends to rings or heads.

At the head the machine is provided, as usual, with a feed-hopper, E, delivering the material into a conical screen, F, through which the line material passes into the interior of the reel, while the dough-I )alls and coarse matters are discharged at the head, as in existing' machines. At the tail end the seau No. 240,155. (No moda.)

reel is carried closely through a vertical partition, G, into a vertical chamber, H, which receives the tailings therefrom.

In applying our improvements to the machine we mount within the reel the cylinder I, having a diameter somewhat less than the interior of the reel. This drum may be made of wood, sheet metal, or other material and carried by the shaft of the reel. IVe prefer to close its two ends by heads secured therein, as shown, the head at the receiving end of the machine being set backward within the end of the drum, which is extended forward around the outside of the conical screen F. This construction admits of the cylinder being extended the full length of the reel, Vso as to render the surface of the latter fully available without elongating the machine to admit the conical screen. The reel and the conical screen revolve with the shaft and drum.

The material entering the reel passes into the annular space between the bolting-cloth and the surface of the cylinder, which acts to con'-l iine it in contact with the bolting-surface. In practice we find that the material thus con fined has a tendency to rise to a certain extent on the ascending side of the reel and to roll downward over the bolting-surface, thus increasing the efficiency of the machine.

The details of construction maybe modified at will.

IVe are aware that a 1;)olygoi1al reel has been provided with an internal drum having three longitudinal ribs or buckets adapted to receive nniterial elevated by one side of the reel and deliver it to the opposite side ot' the reel, and to such construction we lay no claim, an essential feature of the present constriiiction residing- `in the formation of the drinn with a sm'ooth as distinguished from a ribbed surface. \Vhen constructed with the smooth surface and arranged in close proximity to the inner surface of the reel, the drum serves to couiine between 'its outer surface and the inner surface of the reel a thin sheet or stratum of material, which Hows constantly and uninierruptedly downward on the ascencl- In testimony whereof We hereunto set our ing bolting-surface, our drum being incapable hands, this 9th day of September, 1886,in the of lifting the material over its Center. presence of two attest-ing' witnesses.

Having thus described our invention, what 5 We Claim is-q J OI-IN M. FIN CH.

In a centrifugal reel, the combination of v\VILLIAM D. GRAY.

the outer reel, the inner Cylinder having a smooth surface anda recessed head, and the VitnesSes:

conical screen F, extended into the end of the JOHN I. MARSHALL, 1o cylinder, as described. THEO F. WAMBOLD. 

